There are three different pipes used to fill a pool: pipe x…

There are three different pipes used to fill a pool: pipe x, pipe y, and pipe z. Pipe x can fill the pool in a days, pipe y in b days, and pipe z in c days, where a > b > c. When all three pipes are used together to fill a pool, it takes d days to fill the pool. Which of the following must be true? I. d<c II. d>b III. c/3<d<a/3

AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #92278